sk-queue: add SCM_PIDFD / SO_PASSPIDFD checkpoint/restore support - #3093

Open

3idey wants to merge 15 commits into

checkpoint-restore:criu-devfrom

3idey:scm-pidfd

Commits on Sep 1, 2026

sk-queue: don't drop deferred packets with zero ucred pid
3idey
committed
3e13f69
sockets: add fallback definitions for SO_PASSPIDFD and SCM_PIDFD
3idey
committed
22176f9
kerndat/cr-check: detect SO_PASSPIDFD support
3idey
committed
9e91db6
sockets: dump and restore SO_PASSPIDFD
3idey
committed
0b663d4
sk-queue: handle SCM_PIDFD control messages on dump
3idey
committed
66784e4
zdtm: add sk-unix-dgram-pidfd test for SCM_PIDFD checkpoint/restore
3idey
committed
30e9037
zdtm: add sk-unix-dgram-pidfd-cred test for combined SCM cmsgs
3idey
committed
443e72b
kerndat/cr-check: detect PIDFD_GET_INFO support
3idey
committed
a9ea059

Commits on Sep 3, 2026

pidfd: restore the exit status of a pidfd of a dead process
3idey
committed
8c49a0a
zdtm: check the exit status of a restored dead pidfd
3idey
committed
ae200b3
sk-queue: C/R packets of dead senders on SO_PASSPIDFD sockets
3idey
committed
e2d6e2b
zdtm: add sk-unix-dgram-pidfd-stale test for stale pidfd in queue
3idey
committed
c61fbf1
pidfd: key dead pid stand-ins on the pidfs inode
3idey
committed
964762b
zdtm: add sk-unix-dgram-pidfd-ino test for dead sender identity
3idey
committed
cac620b

Commits on Sep 4, 2026

zdtm: add sk-unix-dgram-pidfd-xtask test for a dead sender across tasks
3idey
committed
67b7715